Method of manufacturing strip metal bearing stock



L. SANDLER May 17, 1938.

METHOD OF MANUFACTURING STRIP METAL BEARING STOCK Original Filed Oct. 23. 1955 IN VEN TOR.

[00/5 500 d/er B W lg A TTORNE Y.

Patented May l7, 1938 mm or MANUFACTURING s'rmr METAL BEARING s'rocK Louis SandlenNew Castle, Pa., assignor to Johnson Bronze Company, New Castle, Pa., acorporation of Pennsylvania Original application October 23, 1935, Serial No.

46,296. Divided and'this application June 9, 1937, Serial No. 147,302

3 Claims.

My invention relates to an improved method of manufacturing strip metal stock for the production of bearings, relatingmore particularly to sleeve bearings stock formed of bearing metal having a steel backing. This application is a division of my former application Serial No. 46,296, filed Oct. 23, 1935.

In the manufacture of such bearings, particularly in the class having a bronze bearing surface with a steel backing or jacket, it has been genercome the above difliculty as well as cheapened the production of bearing manufacture.

In the accompanying drawing, 1. have illustrated byimproved method, wherein like numer .als of reference indicate like parts, in which drawing- Figure 1 is a diagrammatic side elevation of a device involving features to assist in carrying out my invention.

Figure 2 is an enlarged end sectional view of the chamber showing the forming outlet or die.

Figures 3, 4, 5 and 6 are end elevations showing the progressive steps of the method.

In the practice of my improved method, I pro- 35 vide an initial steel member in the form of a tube l, of the desired thickness and other dimensions.

The tube is then passed between suitable rolls, not shown, in order to flatten same, as in Fig. 4, thus entirely sealing the interior.

After thus flattening the tube it is passed up overa plurality of rollers 2 and. down into a suitable vessel 3 containing molten bearing metal heated to and maintained at'the desired temperature by any suitable means not shown.

45 The member I is then passed through a suitable controlled outlet opening or forming die 4, comprising the slots 5 corresponding in width and thickness to that of the layer of bearing metal to be fused to the steel member, as at 5. As it passes through the die it is engaged by the draw,- ing rollers iZ-IZ. I

In continuing the passage of the strip through the lower portion of the outlet or die, which is chilled by suitable means, as by running water in a space a: about the lower part of the die, it causes the bearing metal to solidify and form a strip 8 of the bearing metal on each outer side of the ally considered impossible to fuse bearing metal to coated as originally. By this method I have oversteel member I of uniform thickness and width,

leaving a margin of steel at the edges. See Fig. 5.

After the strip or member is thus formed, the

, margin or longitudinal edges l' are removed by suitable cutting means, and when so removed the member I separates'into two like laminated members, as shown in Fig. 6, each comprising a steel backed bearing stock strip, in which the steel and bearing metals are of like width.

'The margin on the edges of the .steel strip is, as will be apparent, preferred in passing the steel strip through the die to guide same through said die opening, maintain it in position and cause the bearing metal to be of equal thickness and width throughout its length as well as have the two-strips of like form.

It will also be apparent that the margin or edges of the stock strips may be retained thereonand later removed.

Having thus shown and described my inven- 20 tion, what I claim and desire to secure by Letters Patent, isv 1. A method of forming laminated bearing stock in strips, which consists in providing a tube, fiat tening same to provide a two layer strip member of superposed relation, thereby sealing the meeting edges of the layers, applying a layer of hearing metal to the outer sides of the member by passing the same into and'through a body of molten bearing metal in a container, shaping the layers of bearing metal thereon by removing said strip through a forming die outlet in the container,and finally chilling the layers of bearing metal while passing through the die.

2. A method of forming laminated bearing stock in strips, which consists in providing a tube, fiattening same to provide a two layer strip member of superposed relation, thereby sealing the meeting edges of the layers, applying a layer of bearing metal to the outer sides of the member by passing the same into and through a body of molten bearing metal in a container, shaping the layers of bearing metal thereon by removing said strip through a forming die outlet in the container, chilling the layers of bearing metal while passing through the die and then trimming off the longitudinal marginal edges to separate the member into two like hearing strips.

3. The method of forming bearing strips, which consists in sealing a steel tube by flattening throughout its length to close its interior, applying bearing metal to the outer sides thereof, then trimming off the longitudinal marginal edges of the tube to separate same into two like strips of steel backing each having one side provided with hearing metal.

LOUIS SANDLER. 

